condition mean min max 4 h after light 767.9374915000001 696.214467 839.660516 8 h after light 721.6117425 667.376071 775.847414 12 h after light 587.442127 465.165701 709.718553 4 h after dark 430.7636775 335.910683 525.616672 8 h after dark 309.560078 238.462826 380.65733 12 h after dark 505.385903 505.385903 505.385903